import static org.junit.jupiter.api.Assertions.*;

class Triangle {
     String  classify(int a, int b, int c) {
        if (a < 1 || a > 100 || b < 1 || b > 100 || c < 1 || c > 100) {
            return "输入错误";
        }

        if (a + b <= c || a + c <= b || b + c <= a) {
            return "非三角形";
        }

        if (a == b && b == c) {
            return "等边三角形";
        } else if (a == b || a == c || b == c) {
            return "等腰三角形";
        } else {
            return "一般三角形";
        }
    }
}